Actor/writer/occasional drag queen Charles Busch glammed it up during an appearance this week at Babson College’s Carling-Sorenson Theater. Busch, who may be best known for his Tony-nominated play, “The Tale of the Allergist’s Wife,” was on campus as part of Steven Maler’s BabsonARTS program. Busch hung around afterward and chatted with members of the audience, including actor Chris Cooper and wife Marianne Leone Cooper and comedian Patty Ross.